Question: Which solid flammable chemical compound has the lowest explosive velocity?
Paraphrase: Out of all solid flammable chemical compounds, which has the lowest explosive velocity?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q11173 . ?ent wdt:P2231 ?obj . ?ent wdt:P31 wd:Q21073024} ORDER BY ASC(?obj)LIMIT 5 
Answer: TNT, picric acid, nitramine